Of the bat kind there is an extraordinary variety: the churi-churi is the smallest species, called vulgarly burong tikus, or the mouse-bird; next to these is the kalalawar; then the kalambit; and the kaluwang (noctilio) is of considerable size; of these I have observed very large flights occasionally passing at a great height in the air, as if migrating from one country to another, and Captain Forrest notices their crossing the